Music-leaf turner.



PATENTED MAY 2, 1905.

J. D. TROMBLBY.

MUSIC LEAF TURNER.

APPLICATION FILED MAR. 1. 1905.

2 SHEBTS-BHEET 1.

Witnesses I I I7 PATENTED MAY 2, 1905.

3'. D. TBOMBLEY.

MUSIC LEAP TURNER.

APPLIOATION FILED MAR.1.1905.

2 SHEETSSHEET 2.

UNITED STATES Patented May 2, 1905.

PATENT OFFICE.

JOSEPH D. TROMBLEY', OF OHEBOYGAN, MICHIGAN, ASSIGNOR OF ONE- HALF TOJOSEPH KESSELER, OF OHEBOYGAN, MICHIGAN.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 788,740, dated May 2,1905.

Application filed March 1, 1905. Serial No, 247,955.

T on whom, it may concern:

Be it known that I, JOSEPH D. TROMBLEY, a citizen of the United States,residing at Oheboygan, in the county of Oheboygan and State of Michigan,have invented a new and useful Music-Leaf Turner, of which the followingis a specification.

This invention relates to music-leaf turners, and has for its object toprovide certain new and I0 useful improvements in devices of this classto particularly adapt the same for application to upright pianos and toarrange the same for effective actuation by the knee of the playerwithout obstructing the keyboard in any man- [5 ner whatsoever. It isfurthermore designed to provide for attaching the device to a pianowithout altering or changing the latter in any manner whatsoever beyondthe application thereto of such bearings and brackets as are necessaryfor the support of the actuating parts of the device.

Another object of the invention is to effect convenient engagement ofthe leaf-turning members with the leaves of the music and to insure theturning of only one sheet at a time.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particularlypointed out in the appended claims.

In the accompanying drawings, Figure 1 is a front elevation of anupright piano having the leaf-turner of the present invention ap- 3 5plied thereto. Fig. 2 is an enlarged detail view of the music-leafturner. Fig. 3 is an enlarged detail horizontal sectional view of thedevice. Fig. 4 is an enlarged vertical sectional view taken through therotary shifting 4 member for moving the leaf-engaging members. Fig. 5 isa detail perspective View of the rotary shifting member. Fig. 6 is adetail perspective view of the cam with which the shifting membercooperates. Fig. 7 is an enlarged detail cross-sectional view on theline 7 7 of Fig. 2.

Like characters of reference designate corresponding parts in each andevery figure of the drawings.

The present device includes a music-rack 1 5 in the nature of an oblongopen frame provided at its lower edge with a leaf-supporting ledge orflange 2, there being suitable supports or feet 3 at opposite ends ofthe rack for supporting the device upon the usual mu- 5 5 sic-rail 4 ofany ordinary form of upright piano, (shown at 5 in Fig. 1 of thedrawings.) At the middle of the ledge or flange 2 the latter is cutaway, as at 6, and there is a substantially horizontal bar 7 hungbeneath this cutaway portion by means of hangers 8, secured to the underside of the flange or ledge 2 at opposite ends of the cut-away portion6.

An upright spindle 9 has its lower end stepped in the cross-bar 7, whichforms a step 6 5 bearing or bracket for the spindle, the upper portionof the latter being let into a longitudinal groove or seat 10, formed inthe musicrack. Upon the spindle 9 and in the open space between the bar7 and the ledge or flange 7 2 there is a gear 11, which is provided uponits upper face with an upstanding trip projection 12, having an inclinedor beveled top end 13, said projection working in an arcuate uprightslot 1 formed concentrically in a cam 15, which has an opening 16disposed concentrically with respect to the slot 1a and through whichthe spindle 9 extends. At the rear of the cam 15 there is an extendedattaching portion 17, which is suitably secured to the under side of themusic-rack.

Each of the leaf-turning members consists of an upstanding finger, therebeing three such fingers shown in the accompanying drawings anddesignated A, B, and O, each finger ter- 5 minating at its lower end ina laterally-direeted arm 18, having a terminal eye or bearing 19rotatably embracing the spindle 9 below the gear 11, there beinganother-arm, 20, projected laterally from the linger above the lower arm9 and across the top of the cam, with the outer end of this armterminating in an eye or bearing 21, loosely embracing the spindle 9,whereby the two arms and the finger carried thereby are capable of beingswung around the spindle 9 as a center. The successive upper arms 20work across the cam in frictional engagemont therewith and when swung tothe right-hand side of the device lie one upon the other, as bestindicated in Fig. &, with the lowermost arm lying upon the top of thecam and the other arms decreasing in length upwardly therefrom. Thelowermost arm is in the path of the trip projection 12, carried by thegear 11, when moving outwardlythrough the areuate slot 14:, whereby thelowermost arm and its finger A will be swung from the right-hand side ofthe device to the left-hand side thereof. During the swinging of thefinger A from the right to the left the arm 20 gravitates upon the camuntil it reaches its left-hand limit by striking against the rack, andwhen it reaches its left-hand limit its bearing 21 is received in theopening 16, thereby letting the next upper arm 20 down upon the cam.When the gear 11 is rotated in a backward direction to its originalposition, the beveled end of the trip projection 12 wipes beneath thelowermostarm 20 and passes to the rear thereof in position forengagement with the rear side of the lowermost arm 20 when the tripprojection is again moved forwardly, whereby the severalmusic-leafengaging members may be readily swung from right to left.

For convenience in rotatably shifting the gear 11 to actuate theleaf-engaging members there is a gear 22 in mesh with the gear 11 andjournaled upon an upright frame-bar 23 at the back of the music-rack,there being a drive-shaft 24: journaled in the bar 23 and one of thefeet 3 in rear of the music-rack. Upon the shaft 2% is a gear 25, inmesh with the gear 22, and another gear, 26, is carried by the outer endof the shaft at the outer side of the foot 3. An upright shaft 27 ismounted in upper and lower bearings 28 and 29, secured upon the adjacentend of the piano-case, the upper end of the shaft being provided with agear 30, in mesh with the gear 26. The bracket 28 has anoverhangingshield 31, which guards and houses the gears 26 and 30, withthe upper end of the shield extended downwardly in rear of the gear 26and pierced by the shaft 2 1 to form a bearing-bracket 32 for theextremity of said shaft. Upon the lower end of the shaft 27 there is apinion 33, which is in mesh with an endwise-movable rack 3 1 upon theadjacent end of a horizontal end wisemovable rod 35, mounted to workthrough bearings 36 and 87, secured upon the under side of the keyboardof the piano-case and provided with a hinge-joint 38 in that end portionof the rod which projects beyond the bearing 36. There is a pin orshoulder 39, carried by the rod 35 at the left-hand side of the bearing36, and a helical spring 10, embracing the rod and engaging against theshoulder and the bearing 36 to yieldably maintain the FCC 35 atitsleft-hand limit. A horizontally-movable lever 41 is hinged to the underside of the keyboard and connected to the rec 35 at a suitabledistanceto the right of the middle of the piano and in position formovement to the right by pressure of the right knee of the player.

In using the present device the music is placed upon the music-rack inthe usual manner and the leaf-turning members A, B, and C are engagedback of the respective leaves to be turned. By pressing to the rightupon the knee-lever 41 the rod 35 will be shifted to the right, andthrough the medium of the rack 34 and the pinion 33 the shaft 37 will berotated in the direction of the arrow thereon in Fig. 2, thereby turningthe shaft 21 in a direction to rotatably shift the gear 11 from theright to the left, the trip projection 12 of course engaging thelowermost arm 20 and swinging the same and the finger A around to theleft, whereby the leaf in front of the finger A will also be turned tothe left. it will here be noted that the swinging movement of eachleaf-turning member from the right to the left is limited by reason ofits upper arm 20 engaging the upright transversely-disposed shoulder 12at the left-halal low side of the cam. Upon removing the pressure of theknee from the lever 11 the spring 40 will automatlcally return the rodto its original position, thereby rotating" the member 11 back to itsoriginal position in readiness to turn the n ext leaf-en gaging linger,and so on throughout the series of lingers.

Having thus described the invention, what is-claimed is* 1. A music-leafturner com prising a musicrack, a cam carried by the rack and providedwith an inclined upper face and an arcuate slot intersecting its upperface, a series of leaf-turning members mounted to rotate coneentricallywith respect to the slot and travcling over the inclined upper face ofthe cam, a trip member working in and projected through the slot forsuccessive engagement with the leaf -turning members, and means forworking the projection back and forth in the slot.

2. A music-leaf turner comprising a rack, a cam carried by the rack andprovided with an inclined upper face which is intersected by an arcuateslot, a spindle piercing the cam concentrically with respect to theslot, a trip working in the slot and projected above the top of the cam,means for working the projection in the slot, and a series ofleaf-turning members having lateral arms mounted to swing upon thespindle and traveling in frictional engagement across the inclined topof the cam in the path of the trip projection.

3. A music-leaf turner comprising a rack, a cam carried by the rack andprojected in front thereof with its upper face inclined downwardly fromright to left and intersected by an arcuate slot, a spindle rising fromthe cam concentrically with respect to the slot, a trip projectionextending upwardly through the slot and working back and forth thereinwith its upper end rising above the top of the cam, and a series ofleaf-turning members, each leaf-turning member having a lower armrotatably mounted upon the spindle below the cam and also provided withan upper arm rotatably mounted upon the spindle above the cam andworking in frictional engagement upon the top thereof in the path of thetrip projection.

4. A music-leaf turner comprising a cam having an inclined upper face, aspindle rising from the cam, a trip member traveling concentricallyaround the spindle, a series of leafturning members mounted to rotateupon the spindle and loose thereon to gravitate upon the inclined faceof the cam, said members being supported one upon another when turned tothe right, and means to work the trip member back and forth tosuccessively swing the leaf-turning members from the right to the e'ft.

5. A music-leaf turner comprising a cam having its upper face inclineddownwardly from the right to the left and provided with an arcuate slotintersecting the top and bottom thereof, a spindle piercing the cam andprojecting at the top and bottom thereof concentrically with the slot, aseries of leaf-turning members, each member having upper and lower armsmounted to rotate upon the spindle and located above and below the cam,the upper arm working in frictional engagement across the top of thecam, the series of upper arms being supported one upon another whenturned to the right, and a trip member working in the slot and projectedabove the top of the cam for engagement with the lowermost upper arm atthe right-hand -side of the cam to swing the leaf-turning member fromthe right to the left. i

6. A music-leaf turner comprising a support, a leaf-turning membermounted to rotate upon the support,a gear to rotate the member,asubstantially horizontal drive-shaft, a connection between the shaft andthe gear, an upright power-shaft'geared to the drive-shaft, a pinionupon the upright shaft, a substantially horizontal endwise-movablerack-bar engaging the pinion, and a controlling-lever eonnected to therack-bar.

7. The combination with an upright piano, of a swinging leaf-turningmember mounted thereon, a substantially horizontal drive-shaft geared tothe leaf-turning member, an upright power-shaft mounted upon one end ofthe piano-case and geared to the drive-shaft, and knee-controlled meansmounted upon the under side of the keyboard of a piano and connected tothe upright power-shaft for rotating the same.

8. In a music-leaf turner, the combination of a music-rack, a camcarried by the rack and projected in front thereof with its upper faceinclined downwardly from right to left and provided with an arcuate slotintersecting the top and bottom of the cam and an opening piercing thecam concentrically with respect to the slot, there being an upstandingshoulder at the low left-hand side of the cam, a spindle projectingthrough the opening above and below the cam, a gear mounted upon thespindle beneath the cam and provided with an upstanding trip projectionworking in the slot and projected above the top of the cam, a series ofupstanding leaf-turning members having upper and lower transverse armsmounted to turn upon the spindle above and below the cam, the upper armsworking in frictional engagement across the inclined top of the cam andsupported one upon another when located at the right-hand side of thecam, a driveshaft geared to the gear, an upright powershaft geared tothe drive-shaft, a pinion upon the power-shaft, an endwise-movablerack-bar for engagement with the pinion, and a kneeactuated leverconnected to the rack-bar.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JOSEPH D. TROMBLEY.

Witnesses:

ELIZABETH MACDONALD, EDWARD A. HULBERT.

